W1

An AI coding agent that lives in your editor. Describe what you want — a feature, a fix, a whole app — and W1 builds it in your project: editing files, running commands, and checking its own work, live in the side panel.

No API keys. No setup. W1 runs on a hosted backend, so you just sign in and start building — nothing to configure, no provider keys on your machine.

🔑 Closed beta

W1 is invite-only right now. You'll need a beta key to sign in — join the waitlist at w1lab.com and we'll send you one.

What W1 does

• Builds — "add Google sign-in", "make a landing page for my app", "scaffold a REST API."
• Fixes & refactors — "find why checkout fails and fix it", "split this 800-line file into modules."
• Explains — ask how part of your codebase works; W1 reads it and tells you.
• Designs from images — paste or drop a screenshot and W1 builds to match.

Every run happens in your real project, and you watch each step as it goes.

Get started

1. Install W1 (you're here) and reload your editor.
2. Click the W1 icon in the sidebar → Sign in.
3. Paste your beta key when prompted. (No key yet? Join the waitlist.)
4. Open a folder, type what you want, and hit send.

💡 Have Node and git installed for best results — W1 uses them to run and verify your changes — but it works without them.

Why W1

• Just sign in — no keys, no model setup, no per-token billing to wire up.
• It checks its own work — runs your tests, lints, and builds, and reports the real results.
• Skills on demand — W1 pulls in specialized abilities (frontend design, documents, testing…) only when a task needs them.
• Stays out of your repo — W1 keeps its working files to itself; your codebase stays clean.

Privacy

W1 runs on a hosted backend, so model calls and a short record of each run leave your machine:

• Run traces (on by default) — a trimmed record of each run (your prompt, the plan, command results, and a code diff capped at 20,000 characters) is sent to W1 to diagnose and improve the agent. No keys or secrets are included. Turn it off with the w1.shareTraces setting.
• Usage analytics — anonymous product stats (runs, tokens, latency, errors). No source code is sent.
• Set VS Code's telemetry.telemetryLevel to off to disable both.

Full policy: app.w1lab.com/privacy

Settings

Made for builders. Join the waitlist →